Sunlike, have you considered Nichia V4 COBs?
According to my rough calculations, when underdriven they should deliver close to 140 lm/W at 85°C with CRI 9580.
TIL Citizen’s primary business is LEDs, very interesting!
Suppose their watch brand is more of a holding of the larger company like how “Seiko Epson” owns the Seiko watch brand as a tiny sliver of everything else.
Interesting! I've been trying to keep an eye out for (reasonably priced) home lighting products made with their new Thrive lineup. My ultimate would be a zigbee-controlled CCT/dimming option. It looks like their Vesta series does 2700K-6500K, though frankly I never use above 5000K.
Where should I keep an eye out for more info? @bocian
They are in PL as well. I considered them until I saw some CRI97 lamp (or bulb?) that they claimed to make over 150 lm/W at very low price.
I don’t trust their ratings and I won’t buy them.
I’m shopping for similar lights…and I chose to go with simple lights that are based on E27 bulbs, either for all or for most rooms, not sure yet.
The reason is that:
The part that fails from time to time is inexpensive and easy to replace
There’s a lot of choice of CRI97+ bulbs as well as bulb-based fixtures, but nearly all fixtures with LEDs have just CRI80
I consider some of the bulbs that over-saturate colours for the dining room, good luck finding one with LEDs already installed
Though I like how the diffuser is uniformly lit in LED-based fixtures. And for that reason I consider buying a fixture and filling with LED strips. Though it’s more work, not so easy to replace (still quite OK) and actually there are fewer good strips than good bulbs.
I am thinking to implement it the same way as there are some options on E27. The downside could be that the light is not evenly distributed as with the integrated LED. I am also not sure how the diffuser will affect the CRI.
Maybe I will conclude on buying some E27 Sunlikes in combination with any of the options above.
For the rest of the installation I plan to buy some GU10 Philips ExpertColor (or Sunlikes on GU10 adapter, but don’t like the adapter idea). Another option is GX53 Sunlike - SunLike5-8 GX53 светодиодная лампа.
I chose to go with Lidl’s Livarnolux for the bulk of my bulb needs. But I have some uses for better bulbs as well, these will be filled by either Sunlike or Bocian.
Below is my latest product (Bridgelux THRIVE 7W GU10 TIR optics) . Sorry, but I am quite a busy man and currently do not have time to translate. I will make a description in free time and maybe send some samples to Maukka https://www.swiatelka.pl/viewtopic.php?f=57&t=25080
The same driver as here but with a higher current set: https://budgetlightforum.com/t/-/51820
Unfortunately, there is very little space in the GU10 mount for the power supply. I like drivers with a power factor correction and high efficiency ~ 90% as been used in this product. There are available small drivers with a fast output 40-60kHz but they have a PF ~ 0.5 and an efficiency between 70-80% (more heat generated in the power supply system = much shorter product life).